Mike writes – “For those who don’t know, Shapelock is a polymer (plastic) similar to polypropylene except that it has a very low temperature softening point. The idea is that you heat some water to around 160 degrees F and dump some of the pellets into the water to soften them to a moldable state. After molding, you then allow the plastic to cool and it once again takes-on its hard form. The label likens Shapelock to “modeling clay on steroids” and that’s a pretty good analogy.” – Link.